5x Panasonic CR2450 3V. Panasonic is a worldwide leader in small electronics batteries. Panasonic offers a full line of Watch Electronic Specialty Batteries for applications used in precision engineering tools to power a wide variety of small electronic devices. used for: Watches, Heart Rate Monitor, Cameras, Calculators, Car Security Alarm, Keyless Car Remotes, Organizers, Glucometer, Computer Equipment (memory backup battery), Toys, Communication Equipment, data pack for video cameras, and other devices that requires this battery size Equivalent to: DL2450, CR2450N, ECR2450, BR2450, BR2450-1W, CR2450N, KCR2450, LM2450, 5029LC